How much space could you get shrinking all databases
This is script is useful when you are short of space on a drive and you need to know how much space can you get shrinking your databases. Although is shrinking is not a recommended practice some times you need to get free space in your drive. Just execute the script and it will tell you the free space you can obtain.
You gan modify the line where[UsageType] = 'data' to specify log or data files.
As well you can uncomment the line --where MB_Free < 5000 to specify drives with less than 'x mbytes'.
begin
set nocount on
if exists (select 1
from tempdb..sysobjects
where [Id] = object_id('tempdb..#dbfileinfo'))
begin
drop table #dbfileinfo
end
if exists (select 1
from tempdb..sysobjects
where [Id] = object_id('tempdb..#logsizestats'))
begin
drop table #logsizestats
end
if exists (select 1
from tempdb..sysobjects
where [Id] = object_id('tempdb..#datafilestats'))
begin
drop table #datafilestats
end
if exists (select 1
from tempdb..sysobjects
where [Id] = object_id('tempdb..#fixeddrives'))
begin
drop table #fixeddrives
end
if exists (select 1
from tempdb..sysobjects
where [Id] = object_id('tempdb..#usados'))
begin
drop table #usados
end
create table #fixeddrives
(
DriveLetter varchar(10),
MB_Free dec(20, 2)
)
create table #datafilestats
(
DBName varchar(255),
DBId int,
FileId tinyint,
[FileGroup] tinyint,
TotalExtents dec(20, 2),
UsedExtents dec(20, 2),
[Name] varchar(255),
[FileName] varchar(400)
)
create table #logsizestats
-- DBCC SQLPERF -- Provides statistics about how the transaction-log space was used in all databases. It can also be used to reset wait and latch statistics.
(
DBName varchar(255) not null primary key clustered,
-- Database Name -- Name of the database for the log statistics displayed.
DBId int,
LogFile real,
-- Log Size (MB) -- Actual amount of space available for the log. This amount is smaller than the amount originally allocated for log space because the SQL Server 2005 Database Engine reserves a small amount of disk space for internal header information.
LogFileUsed real,
-- Log Space Used (%) -- Percentage of the log file currently occupied with transaction log information.
Status bit
) -- Status -- Status of the log file. Always 0.
create table #dbfileinfo
(
[ServerName] varchar(255),
[DBName] varchar(65),
[LogicalFileName] varchar(400),
[UsageType] varchar (30),
[Size_MB] dec(20, 2),
[SpaceUsed_MB] dec(20, 2),
[MaxSize_MB] dec(20, 2),
[NextAllocation_MB] dec(20, 2),
[GrowthType] varchar(65),
[FileId] smallint,
[GroupId] smallint,
[PhysicalFileName] varchar(400),
[DateChecked] datetime
)
declare @SQLString varchar(3000)
declare @MinId int
declare @MaxId int
declare @DBName varchar(255)
declare @tblDBName table (
RowId int identity(1, 1),
DBName varchar(255),
DBId int)
insert into @tblDBName
(DBName,
DBId)
select [Name],
DBId
from master..sysdatabases
where ( Status & 512 ) = 0 /*NOT IN (536,528,540,2584,1536,512,4194841)*/
order by [Name]
insert into #logsizestats
(DBName,
LogFile,
LogFileUsed,
Status)
exec ('dbcc sqlperf(logspace) with no_infomsgs')
update #logsizestats
set DBId = db_id(DBName)
insert into #fixeddrives
exec master..xp_fixeddrives
select @MinId = min(RowId),
@MaxId = max(RowId)
from @tblDBName
while ( @MinId <= @MaxId )
begin
select @DBName = [DBName]
from @tblDBName
where RowId = @MinId
select @SQLString = 'SELECT ServerName = @@SERVERNAME,' +
' DBName = ''' +
@DBName +
''',' +
' LogicalFileName = [name],' +
' UsageType = CASE WHEN (64&[status])=64 THEN ''Log'' ELSE ''Data'' END,'
+
' Size_MB = [size]*8/1024.00,' +
' SpaceUsed_MB = NULL,' +
-- 20081125 Arithmetic overflow error converting expression to data type int.
-- ' MaxSize_MB = CASE [maxsize] WHEN -1 THEN -1 WHEN 0 THEN [size]*8/1024.00 ELSE maxsize*8/1024.00 END,'+
' MaxSize_MB = CASE [maxsize] WHEN -1 THEN -1 WHEN 0 THEN [size]*8/1024.00 ELSE maxsize/1024.00*8 END,'
+
-- 20081125 end
' NextExtent_MB = CASE WHEN (1048576&[status])=1048576 THEN ([growth]/100.00)*([size]*8/1024.00) WHEN [growth]=0 THEN 0 ELSE [growth]*8/1024.00 END,'
+
' GrowthType = CASE WHEN (1048576&[status])=1048576 THEN ''%'' ELSE ''Pages'' END,'
+ ' FileId = [fileid],' + ' GroupId = [groupid],' +
' PhysicalFileName= [filename],' +
' CurTimeStamp = GETDATE()' +
-- 20081125 begin @DBName embedded spaces
-- 'FROM '+@DBName+'..sysfiles'
'FROM [' + @DBName + ']..sysfiles'
-- 20081125 end
print @SQLString
insert into #dbfileinfo
exec (@SQLString)
update #dbfileinfo
-- 20081125 begin LogFileUsed is %
-- SET SpaceUsed_MB = (SELECT LogFileUsed FROM #LogSizeStats WHERE DBName = @DBName)
set SpaceUsed_MB = Size_MB / 100.0 * (select LogFileUsed
from #logsizestats
where DBName = @DBName)
-- 20081125 end
where UsageType = 'Log'
and DBName = @DBName
-- 20081125 begin @DBName embedded spaces
-- SELECT @SQLString = 'USE ' + @DBName + ' DBCC SHOWFILESTATS WITH NO_INFOMSGS'
select @SQLString = 'USE [' + @DBName +
'] DBCC SHOWFILESTATS WITH NO_INFOMSGS'
-- 20081125 end
insert #datafilestats
(FileId,
[FileGroup],
TotalExtents,
UsedExtents,
[Name],
[FileName])
execute(@SQLString)
update #dbfileinfo
set [SpaceUsed_MB] = S.[UsedExtents] * 64 / 1024.00
from #dbfileinfo as F
inner join #datafilestats as S
on F.[FileId] = S.[FileId]
and F.[GroupId] = S.[FileGroup]
and F.[DBName] = @DBName
truncate table #datafilestats
select @MinId = @MinId + 1
end
select @@servername as servidor,
substring(A.PhysicalFileName, 1, 1) as unidad,
sum ([Size_MB]) as SqlTotalDB,
sum([SpaceUsed_MB]) as SqlTotalUsedSpaceDB,
sum (( [Size_MB] ) - ( [SpaceUsed_MB] ))as SQLTotalFreeSpaceDB
into #usados
from #dbfileinfo as A
left join #fixeddrives as B
on substring(A.PhysicalFileName, 1, 1) = B.DriveLetter
--ORDER BY CAST([NextAllocation_MB] AS decimal(6,2))
--ORDER BY [FreeSpaceInDrive]
--where ([Size_MB] - [SpaceUsed_MB]) - ([NextAllocation_MB]) < 0
--where (B.MB_Free) + (([Size_MB] - [SpaceUsed_MB]) - ([NextAllocation_MB])) < 2000
--where (B.MB_Free) + (([Size_MB] - [SpaceUsed_MB]) - ([NextAllocation_MB])) <= 0
--where CONVERT(sysname,DatabasePropertyEx([DBName],'Recovery')) = 'FULL'
--where [MaxSize_MB] <> 2097152.00 and [MaxSize_MB] <> -1.00
--where left ([PhysicalFileName],1) = 'C'
--where (CAST(([Size_MB] - [SpaceUsed_MB]) / [Size_MB] AS decimal(4,2))) > 0.5 and ([Size_MB]) > 5000 --mas de la mitad de espacio libre
--where ([Size_MB]) > 100000 --TAMA?O DE LA BASE DE DATOS
--where [DBName] like '%content%'
where[UsageType] = 'data'
--where [NextAllocation_MB] < 5 and [SpaceUsed_MB] > 20 and [dbname] not in ('master','model','msdb','tempdb') -- bases de datos grandes con poco crecimiento
--where [NextAllocation_MB] > 500 -- bases de datos con crecimiento desmesurado
--where [Size_MB] - [SpaceUsed_MB] < 50 and [UsageType] = 'log'
group by substring(A.PhysicalFileName, 1, 1)
select
sum(SQLTotalFreeSpaceDB)
from #fixeddrives as f
inner join #usados as z
on z.unidad = f.DriveLetter
--where MB_Free < 5000
--select * from #usados
--ORDER BY ([Size_MB] - [SpaceUsed_MB]) - ([NextAllocation_MB])
--ORDER BY CAST([NextAllocation_MB] AS decimal(6,2))
if exists (select 1
from tempdb..sysobjects
where [Id] = object_id('tempdb..#dbfileinfo'))
begin
drop table #dbfileinfo
end
if exists (select 1
from tempdb..sysobjects
where [Id] = object_id('tempdb..#logsizestats'))
begin
drop table #logsizestats
end
if exists (select 1
from tempdb..sysobjects
where [Id] = object_id('tempdb..#datafilestats'))
begin
drop table #datafilestats
end
if exists (select 1
from tempdb..sysobjects
where [Id] = object_id('tempdb..#fixeddrives'))
begin
drop table #fixeddrives
end
if exists (select 1
from tempdb..sysobjects
where [Id] = object_id('tempdb..#usados'))
begin
drop table #usados
end
-- 20081125 begin SET NOCOUNT OFF
set nocount off
-- 20081125 end
end 
